public void WithoutArguments()
{
// Arrange
var tool = new CommandLineTool();
// Act
tool.ReadFileText(null, null);
// Assert
// Without arguments the function should process nothing.
}
public void With_MockedFileSystemInteraction()
{
// Arrange
string inputFileDirectory = @"c:\Test";
string inputFileName = "test.ink";
var tool = new CommandLineTool();
tool.FileSystemInteractor = Substitute.For <IFileSystemInteractable>();
// Act
string fileContents = tool.ReadFileText(inputFileDirectory, inputFileName);
// Assert
fileContents.Should().BeNullOrEmpty("because the file system interactor was substituted");
}
public void With_ExceptionThrowingReadFile()
{
// Arrange
string inputFileDirectory = @"c:\Test";
string inputFileName = "test.ink";
var fileSystemInteractorMock = Substitute.For <IFileSystemInteractable>();
fileSystemInteractorMock.When(x => x.ReadAllTextFromFile(Arg.Any <string>()))
.Do(x => throw new System.IO.DirectoryNotFoundException());
var tool = new CommandLineTool();
tool.FileSystemInteractor = fileSystemInteractorMock;
// Act
string fileContents = tool.ReadFileText(inputFileDirectory, inputFileName);
// Assert
fileContents.Should().BeNullOrEmpty("because the file system interactor was substituted");
}